UTC-3:   03   06   09   12   15   18   21   24
mdts    238  236  238  238  236  237  239  240
mdww    233  236  235  236  241  260  266  268
shts    1.4  1.5  1.4  1.2  1.3  1.4  1.3  1.3
shww    1.3  1.0  1.0  1.1  0.9  0.5  0.4  0.7